package com.imooc.api.interceptors;

import com.imooc.enums.UserStatus;
import com.imooc.exception.GraceException;
import com.imooc.grace.result.ResponseStatusEnum;
import com.imooc.pojo.AppUser;
import com.imooc.utils.JsonUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @Author : Kyle_Fu
 * @Date: 2023-05-09 22:30
 *
 * 用于激活状态检查拦截器
 * 发文章,修改文章,删除文章,
 * 发表评论,查看评论等等
 * 这些接口都是需要在用户激活以后,才能进行
 * 否则需要提示用户前往[账号设置]去修改信息
 */
public class UserActiveInterceptor extends BaseInterceptor implements HandlerInterceptor {

    /**
     * 拦截请求,访问controller之前
     * @param request
     * @param response
     * @param handler
     * @return
     * @throws Exception
     */
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        String userId = request.getHeader("headerUserId");
        String userJson = redis.get(REDIS_USER_INFO+ ":" + userId);
        AppUser user = null;
        if(StringUtils.isNotBlank(userJson)){
            user = JsonUtils.jsonToPojo(userJson, AppUser.class);
        }else {
            GraceException.display(ResponseStatusEnum.UN_LOGIN);
            return false;
        }

        if (user.getActiveStatus() == null
                || !user.getActiveStatus().equals(UserStatus.ACTIVE.type)){
            GraceException.display(ResponseStatusEnum.USER_INACTIVE_ERROR);
        }

        /**
         * false: 请求被拦截
         * true:请求通过验证,放行
         */
        return true;
    }

    /**
     * 请求访问到controller之后,渲染视图之前
     * @param request
     * @param response
     * @param handler
     * @param modelAndView
     * @throws Exception
     */
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        HandlerInterceptor.super.postHandle(request, response, handler, modelAndView);
    }

    /**
     * 请求访问到controller之后,渲染视图之后
     * @param request
     * @param response
     * @param handler
     * @param ex
     * @throws Exception
     */
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
    }
}
